Functional analysis of the adenovirus type 5 DNA-binding protein: site-directed mutants which are defective for adeno-associated virus helper activity.
Functional analysis of the adenovirus type 5 DNA-binding protein: site-directed mutants which are defective for adeno-associated virus helper activity.
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腺病毒 5 型 DNA 结合蛋白的功能分析:腺相关病毒辅助活性有缺陷的定点突变体。
DOI:
10.1128/jvi.60.2.653-661.1986
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发表时间:
1986
影响因子:
5.4
通讯作者:
Kitchingman,GR
中科院分区:
文献类型:
--
作者:
Quinn,CO;Kitchingman,GR
We generated four point mutations in the DNA-binding protein (DBP) gene of adenovirus type 5 by oligonucleotide-directed site-specific mutagenesis. The sites mutated were in the three conserved regions (CR; amino acids 178-186 [CR1], 322-330 [CR2], and 464-475 [CR3]) identified previously by comparative sequence analysis (G. R. Kitchingman, Virology 146:90-101, 1985). The mutations resulted in changes in amino acids 181 (Trp to Leu), 323 (Arg to Leu), 324 (Trp to Leu), and 469 (Phe to Ile). The mutated DBP genes were put under the control of the simian virus 40 early promoter and analyzed by transfection for their ability to help adeno-associated virus replicate its DNA in COS-1 monkey cells. Mutations in the aromatic amino acids 324 and 469 reduced the amount of AAV DNA replication approximately 10-fold, while the mutation in Arg 323 produced a reduction of approximately fourfold. The Trp-to-Leu mutation in amino acid 181 had no effect on AAV DNA replication. The decreased helper activity of the 323, 324, and 469 mutations was not caused by any effect of the mutation on the stability of the DBP. These results suggest that CR2 and CR3 are involved in AAV helper activity, specifically in AAV DNA replication. The relevance of these findings to the identification of residues important for the functions of DBP in adenovirus infection is discussed.
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影响因子:
3.5
作者:
J. Kolarov;Jozef Houštěk;J. Kopecký;Š. Kǔzela
通讯作者:
Š. Kǔzela
DOI:
10.1016/s0006-291x(85)80189-3
发表时间:
1985
影响因子:
3.1
作者:
Strieleman,PJ;Schalinske,KL;Shrago,E
通讯作者:
Shrago,E
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
E. Rial;D. Nicholls
通讯作者:
D. Nicholls
影响因子:
3.5
作者:
Ian W. Warhurst;A. Dawson;M. Selwyn
通讯作者:
M. Selwyn
DOI:
--
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Beavis,AD
通讯作者:
Beavis,AD